Say you learn of someone’s death and the cause of death was not apparent, because there were no reported marks on the body. Your list of questions and answers may go something like this:

Was the cause of their death mineral?
No.
Was it vegetable?
Yes.
Was it a vegetable from their garden?
No.
Was it a plant which grows wild?
(Third Stone. Indeterminate answer. Or wrong question. Or off-base question. Or maybe. It could be a combination of domesticated and wild plants. You just don’t know).
Was the person killed by a substance derived from plants?
Yes.
Were they poisoned?
Yes.
Deliberately?
No.
Was this substance taken as a medicine?
Yes.
Did someone administer this medicine to them?
No.
So they administered it to themselves?
Yes.
Did they purchase this medicine?
No.
Did they make this medicine themselves?
Yes.
So is it accurate to say they died of a homemade medicine, derived from natural sources, which they administered to themselves?
Yes.
Did they die because of an adverse reaction by their body to the medicine?
Yes.
Did they poison themselves deliberately with this homemade medicine?
No.